甘谷驿西部油田注水效果分析

通过对超前注水、同步注水、滞后注水进行了对比分析,肯定了超前注水的效果.甘谷驿油田西部注水试验已4年多了,4年多来反九点法注采井网,由于井距小、微裂缝发育、主裂缝明显,东西向油井在部分水淹或含水较高,而南北向油井压裂引效措施后产量不理想,稳产期相对较短,因此优化裂缝主向、侧向井距组合,适当调整注采井网,是提高甘谷驿油田西部注水试验井区效果的关键.

Effect Analysis of Water Injection in West Ganguyi Oilfield

Through comparative analysis of advanced water injection,synchronous water injection and lagging water injection,it’s proved that advanced water injection has well effect.The water injection test in west Ganguyi oil field has been carried out for more than four years,and the nine points injection-production pattern net has been adopted,because of small spacing,micro fracture development and obvious main fracture,east-west oil wells appears part flooding or higher water content,and output of north-south oil wells after fracturing is not ideal,and period of stable production is short.Therefore the optimization of fractures strike and rational well spacing,adjusting the injection-production pattern net are a key to improve water injection test effect in western Ganguyi oil field.